/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 17:04:15,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 17:04:15,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 17:04:15,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 17:04:15,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 17:04:15,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 17:04:15,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 17:04:15,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 17:04:15,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 17:04:15,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 17:04:15,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 17:04:15,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 17:04:15,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 17:04:15,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 17:04:15,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 17:04:15,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 17:04:15,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 17:04:15,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 17:04:15,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 17:04:15,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 17:04:15,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 17:04:15,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 17:04:15,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 17:04:15,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 17:04:15,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 17:04:15,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 17:04:15,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 17:04:15,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 17:04:15,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 17:04:15,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 17:04:15,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 17:04:15,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 17:04:15,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 17:04:15,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 17:04:15,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 17:04:15,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 17:04:15,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 17:04:15,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 17:04:15,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 17:04:15,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 17:04:15,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 17:04:15,163 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 17:04:15,171 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 17:04:15,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 17:04:15,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 17:04:15,173 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 17:04:15,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 17:04:15,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 17:04:15,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 17:04:15,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 17:04:15,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 17:04:15,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 17:04:15,174 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 17:04:15,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 17:04:15,175 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 17:04:15,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 17:04:15,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 17:04:15,175 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 17:04:15,175 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 17:04:15,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 17:04:15,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:04:15,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 17:04:15,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 17:04:15,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 17:04:15,177 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-17 17:04:15,425 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 17:04:15,441 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 17:04:15,445 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 17:04:15,446 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 17:04:15,446 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 17:04:15,447 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-17 17:04:15,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e16b5173/6ac3d7ece5e54eb0a434ce4778ac37cb/FLAGd7d57205b [2020-07-17 17:04:15,994 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 17:04:15,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-17 17:04:16,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e16b5173/6ac3d7ece5e54eb0a434ce4778ac37cb/FLAGd7d57205b [2020-07-17 17:04:16,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e16b5173/6ac3d7ece5e54eb0a434ce4778ac37cb [2020-07-17 17:04:16,371 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 17:04:16,374 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 17:04:16,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 17:04:16,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 17:04:16,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 17:04:16,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:04:16" (1/1) ... [2020-07-17 17:04:16,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d7a61f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:16, skipping insertion in model container [2020-07-17 17:04:16,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:04:16" (1/1) ... [2020-07-17 17:04:16,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 17:04:16,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 17:04:16,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:04:16,625 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 17:04:16,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:04:16,793 INFO L208 MainTranslator]: Completed translation [2020-07-17 17:04:16,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:16 WrapperNode [2020-07-17 17:04:16,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 17:04:16,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 17:04:16,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 17:04:16,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 17:04:16,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:16" (1/1) ... [2020-07-17 17:04:16,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:16" (1/1) ... [2020-07-17 17:04:16,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:16" (1/1) ... [2020-07-17 17:04:16,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:16" (1/1) ... [2020-07-17 17:04:16,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:16" (1/1) ... [2020-07-17 17:04:16,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:16" (1/1) ... [2020-07-17 17:04:16,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:16" (1/1) ... [2020-07-17 17:04:16,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 17:04:16,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 17:04:16,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 17:04:16,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 17:04:16,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:04:16,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 17:04:16,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 17:04:16,909 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-07-17 17:04:16,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-07-17 17:04:16,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 17:04:16,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 17:04:16,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-17 17:04:16,909 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-07-17 17:04:16,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 17:04:16,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-17 17:04:16,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 17:04:16,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 17:04:16,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-17 17:04:16,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 17:04:16,911 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-07-17 17:04:16,911 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 17:04:16,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 17:04:16,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-17 17:04:16,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 17:04:17,459 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 17:04:17,460 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-17 17:04:17,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:04:17 BoogieIcfgContainer [2020-07-17 17:04:17,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 17:04:17,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 17:04:17,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 17:04:17,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 17:04:17,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 05:04:16" (1/3) ... [2020-07-17 17:04:17,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a99bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:04:17, skipping insertion in model container [2020-07-17 17:04:17,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:16" (2/3) ... [2020-07-17 17:04:17,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a99bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:04:17, skipping insertion in model container [2020-07-17 17:04:17,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:04:17" (3/3) ... [2020-07-17 17:04:17,475 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-07-17 17:04:17,486 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 17:04:17,495 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 17:04:17,509 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 17:04:17,532 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 17:04:17,533 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 17:04:17,533 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 17:04:17,533 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 17:04:17,533 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 17:04:17,533 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 17:04:17,534 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 17:04:17,534 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 17:04:17,553 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-07-17 17:04:17,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-07-17 17:04:17,566 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:04:17,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:04:17,568 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:04:17,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:04:17,574 INFO L82 PathProgramCache]: Analyzing trace with hash -309473205, now seen corresponding path program 1 times [2020-07-17 17:04:17,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:04:17,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317702343] [2020-07-17 17:04:17,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:04:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:17,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:04:17,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317702343] [2020-07-17 17:04:17,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:04:17,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 17:04:17,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630006344] [2020-07-17 17:04:17,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 17:04:17,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:04:17,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 17:04:17,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:04:17,914 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 4 states. [2020-07-17 17:04:18,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:04:18,420 INFO L93 Difference]: Finished difference Result 306 states and 369 transitions. [2020-07-17 17:04:18,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 17:04:18,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-07-17 17:04:18,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:04:18,435 INFO L225 Difference]: With dead ends: 306 [2020-07-17 17:04:18,435 INFO L226 Difference]: Without dead ends: 155 [2020-07-17 17:04:18,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 17:04:18,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-07-17 17:04:18,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-07-17 17:04:18,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-07-17 17:04:18,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 170 transitions. [2020-07-17 17:04:18,503 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 170 transitions. Word has length 49 [2020-07-17 17:04:18,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:04:18,504 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 170 transitions. [2020-07-17 17:04:18,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 17:04:18,504 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 170 transitions. [2020-07-17 17:04:18,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-07-17 17:04:18,507 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:04:18,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:04:18,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 17:04:18,508 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:04:18,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:04:18,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1032631156, now seen corresponding path program 1 times [2020-07-17 17:04:18,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:04:18,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884646597] [2020-07-17 17:04:18,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:04:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:04:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:04:18,835 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 17:04:18,836 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 17:04:18,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 17:04:18,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 05:04:18 BoogieIcfgContainer [2020-07-17 17:04:18,894 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 17:04:18,897 INFO L168 Benchmark]: Toolchain (without parser) took 2522.99 ms. Allocated memory was 138.9 MB in the beginning and 236.5 MB in the end (delta: 97.5 MB). Free memory was 102.5 MB in the beginning and 160.4 MB in the end (delta: -57.9 MB). Peak memory consumption was 39.6 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:18,897 INFO L168 Benchmark]: CDTParser took 0.86 ms. Allocated memory is still 138.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 17:04:18,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 418.18 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 179.7 MB in the end (delta: -77.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:18,899 INFO L168 Benchmark]: Boogie Preprocessor took 52.72 ms. Allocated memory is still 202.9 MB. Free memory was 179.7 MB in the beginning and 177.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:18,900 INFO L168 Benchmark]: RCFGBuilder took 619.62 ms. Allocated memory is still 202.9 MB. Free memory was 177.1 MB in the beginning and 140.9 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:18,901 INFO L168 Benchmark]: TraceAbstraction took 1426.18 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 140.2 MB in the beginning and 160.4 MB in the end (delta: -20.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:18,906 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.86 ms. Allocated memory is still 138.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 418.18 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 179.7 MB in the end (delta: -77.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 52.72 ms. Allocated memory is still 202.9 MB. Free memory was 179.7 MB in the beginning and 177.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 619.62 ms. Allocated memory is still 202.9 MB. Free memory was 177.1 MB in the beginning and 140.9 MB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1426.18 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 140.2 MB in the beginning and 160.4 MB in the end (delta: -20.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=8589934606, \old(Zero_fmod)=8589934598, \old(Zero_fmod)=8589934602, one_fmod=1, Zero_fmod={3:0}] [L126] float x = __VERIFIER_nondet_float(); VAL [__VERIFIER_nondet_float()=8589934601, one_fmod=1, x=8589934601, Zero_fmod={3:0}] [L127] float y = -1.0f / 0.0f; VAL [one_fmod=1, x=8589934601, Zero_fmod={3:0}] [L129] CALL isfinite_float(x) VAL [\old(x)=8589934601, one_fmod=1, Zero_fmod={3:0}] [L109] __int32_t ix; VAL [\old(x)=8589934601, one_fmod=1, x=8589934601, Zero_fmod={3:0}] [L111] ieee_float_shape_type gf_u; VAL [\old(x)=8589934601, gf_u={5:0}, one_fmod=1, x=8589934601, Zero_fmod={3:0}] [L112] gf_u.value = (x) VAL [\old(x)=8589934601, gf_u={5:0}, one_fmod=1, x=8589934601, Zero_fmod={3:0}] [L113] EXPR gf_u.word VAL [\old(x)=8589934601, gf_u={5:0}, gf_u.word=4294967296, one_fmod=1, x=8589934601, Zero_fmod={3:0}] [L113] (ix) = gf_u.word VAL [(ix) = gf_u.word=8589934596, \old(x)=8589934601, gf_u={5:0}, gf_u.word=4294967296, ix=0, one_fmod=1, x=8589934601, Zero_fmod={3:0}] [L115] ix &= 0x7fffffff VAL [\old(x)=8589934601, one_fmod=1, x=8589934601, Zero_fmod={3:0}] [L116] return (((ix) < 0x7f800000L)); VAL [\old(x)=8589934601, \result=1, ix=2139095039, one_fmod=1, x=8589934601, Zero_fmod={3:0}] [L129] RET isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=8589934601, Zero_fmod={3:0}] [L129] COND TRUE isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=8589934601, Zero_fmod={3:0}] [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=8589934601, \old(y)=8589934593, one_fmod=1, Zero_fmod={3:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=8589934601, \old(y)=8589934593, one_fmod=1, x=8589934601, y=8589934593, Zero_fmod={3:0}] [L21] ieee_float_shape_type gf_u; VAL [\old(x)=8589934601, \old(y)=8589934593, gf_u={6:0}, one_fmod=1, x=8589934601, y=8589934593, Zero_fmod={3:0}] [L22] gf_u.value = (x) VAL [\old(x)=8589934601, \old(y)=8589934593, gf_u={6:0}, one_fmod=1, x=8589934601, y=8589934593, Zero_fmod={3:0}] [L23] EXPR gf_u.word VAL [\old(x)=8589934601, \old(y)=8589934593, gf_u={6:0}, gf_u.word=8589934592, one_fmod=1, x=8589934601, y=8589934593, Zero_fmod={3:0}] [L23] (hx) = gf_u.word VAL [\old(x)=8589934601, \old(y)=8589934593, gf_u={6:0}, gf_u.word=8589934592, hx=0, one_fmod=1, x=8589934601, y=8589934593, Zero_fmod={3:0}] [L26] ieee_float_shape_type gf_u; VAL [\old(x)=8589934601, \old(y)=8589934593, gf_u={2:0}, hx=0, one_fmod=1, x=8589934601, y=8589934593, Zero_fmod={3:0}] [L27] gf_u.value = (y) VAL [\old(x)=8589934601, \old(y)=8589934593, gf_u={2:0}, hx=0, one_fmod=1, x=8589934601, y=8589934593, Zero_fmod={3:0}] [L28] EXPR gf_u.word VAL [\old(x)=8589934601, \old(y)=8589934593, gf_u={2:0}, gf_u.word=8589934591, hx=0, one_fmod=1, x=8589934601, y=8589934593, Zero_fmod={3:0}] [L28] (hy) = gf_u.word VAL [(hy) = gf_u.word=8589934595, \old(x)=8589934601, \old(y)=8589934593, gf_u={2:0}, gf_u.word=8589934591, hx=0, hy=-1, one_fmod=1, x=8589934601, y=8589934593, Zero_fmod={3:0}] [L30] sx = hx & 0x80000000 VAL [\old(x)=8589934601, \old(y)=8589934593, hx=0, hy=-1, one_fmod=1, sx=-2, x=8589934601, y=8589934593, Zero_fmod={3:0}] [L31] hx ^= sx VAL [\old(x)=8589934601, \old(y)=8589934593, hy=-1, one_fmod=1, sx=-2, x=8589934601, y=8589934593, Zero_fmod={3:0}] [L32] hy &= 0x7fffffff VAL [\old(x)=8589934601, \old(y)=8589934593, one_fmod=1, sx=-2, x=8589934601, y=8589934593, Zero_fmod={3:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) VAL [\old(x)=8589934601, \old(y)=8589934593, hx=2139095040, hy=0, one_fmod=1, sx=-2, x=8589934601, y=8589934593, Zero_fmod={3:0}] [L35] return (x * y) / (x * y); VAL [\old(x)=8589934601, \old(y)=8589934593, hx=2139095040, hy=0, one_fmod=1, sx=-2, x=8589934601, y=8589934593, Zero_fmod={3:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=8589934604, one_fmod=1, x=8589934601, y=8589934593, Zero_fmod={3:0}] [L131] float res = fmod_float(x, y); VAL [fmod_float(x, y)=8589934604, one_fmod=1, res=8589934604, x=8589934601, y=8589934593, Zero_fmod={3:0}] [L134] COND TRUE res != x VAL [one_fmod=1, res=8589934604, x=8589934601, y=8589934593, Zero_fmod={3:0}] [L135] __VERIFIER_error() VAL [one_fmod=1, res=8589934604, x=8589934601, y=8589934593, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 162 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 174 SDtfs, 31 SDslu, 128 SDs, 0 SdLazy, 190 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 4464 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...